1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
// SPDX-License-Identifier: GPL-2.0
#include <errno.h>
#include <memory.h>
#include "../../../util/evsel.h"
#include "../../../util/kvm-stat.h"
#include "arm64_exception_types.h"
#include "debug.h"
define_exit_reasons_table(arm64_exit_reasons, kvm_arm_exception_type);
define_exit_reasons_table(arm64_trap_exit_reasons, kvm_arm_exception_class);
const char *kvm_trap_exit_reason = "esr_ec";
const char *vcpu_id_str = "id";
const int decode_str_len = 20;
const char *kvm_exit_reason = "ret";
const char *kvm_entry_trace = "kvm:kvm_entry";
const char *kvm_exit_trace = "kvm:kvm_exit";
const char *kvm_events_tp[] = {
"kvm:kvm_entry",
"kvm:kvm_exit",
NULL,
};
static void event_get_key(struct evsel *evsel,
struct perf_sample *sample,
struct event_key *key)
{
key->info = 0;
key->key = evsel__intval(evsel, sample, kvm_exit_reason);
key->exit_reasons = arm64_exit_reasons;
/*
* TRAP exceptions carry exception class info in esr_ec field
* and, hence, we need to use a different exit_reasons table to
* properly decode event's est_ec.
*/
if (key->key == ARM_EXCEPTION_TRAP) {
key->key = evsel__intval(evsel, sample, kvm_trap_exit_reason);
key->exit_reasons = arm64_trap_exit_reasons;
}
}
static bool event_begin(struct evsel *evsel,
struct perf_sample *sample __maybe_unused,
struct event_key *key __maybe_unused)
{
return !strcmp(evsel->name, kvm_entry_trace);
}
static bool event_end(struct evsel *evsel,
struct perf_sample *sample,
struct event_key *key)
{
if (!strcmp(evsel->name, kvm_exit_trace)) {
event_get_key(evsel, sample, key);
return true;
}
return false;
}
static struct kvm_events_ops exit_events = {
.is_begin_event = event_begin,
.is_end_event = event_end,
.decode_key = exit_event_decode_key,
.name = "VM-EXIT"
};
struct kvm_reg_events_ops kvm_reg_events_ops[] = {
{
.name = "vmexit",
.ops = &exit_events,
},
{ NULL, NULL },
};
const char * const kvm_skip_events[] = {
NULL,
};
int cpu_isa_init(struct perf_kvm_stat *kvm, const char *cpuid __maybe_unused)
{
kvm->exit_reasons_isa = "arm64";
return 0;
}
|
